17 research outputs found
Photoinduced Doughnut-Shaped Nanostructures
Get PDFWe show that an incoherent unpolarized single-beam illumination is able to
photoinduce nano-doughnuts on the surface of azopolymer thin films. We
demonstrate that individual doughnut-shaped nano-objects as well as clusters of
several adjacent nano-doughnuts can be formed and tailored with wide range of
typical sizes, thus providing a rich field for applications in nanophotonics
and photochemistry.Comment: 13 pages, 3 figures, first version to chem. phys. lett. 201
Near-Field Optical control of Doughnut-Shaped Nanostructures
Get PDFThe application of a local near-field optical excitation can be used to
control step-by-step the reshape of individual doughnut-shaped azopolymer
nano-objects by varying the time of illumination demonstrating its promising
performance as a functional nano-object. The possibility to provide both
photoinduced reshaping opens a way to the fundamental study of size-dependent
scaling laws of optical properties, photoinduced reshaping efficiency and
nanoreactor or nanoresonator behavior at nanometer scale. As an example the
nano-object is used to self-assembly polystyrene nanospheres in a supraball.Comment: 15 pages, 6 figure
Orientation of the AD-1 azo-dye molecules in solid nanostructured films upon the two-photon excitation
No full textSolid-state lasers based on copolymers of methyl methacrylate and 2-hydroxyethyl acrylate doped with pyrromethene 567 dye
No full textHighly photostable solid-state dye lasers based on mixed pyrromethene 567 and coumarin 500
No full text
